XmChangeColor(3) on Linux
The text a39ea0e36fec, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Recalculates all associated colors of a widget "XmChangeColor" "Color functions" "XmChangeColor"